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author | Joseph Myers <joseph@codesourcery.com> | 2012-07-01 13:08:59 +0000 |
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committer | Joseph Myers <joseph@codesourcery.com> | 2012-07-01 13:08:59 +0000 |
commit | e84eabb3871c9b39e59323bf3f6b98c2ca9d1cd0 (patch) | |
tree | dff3f1b79454b518d15a7b9bbedeb57ff156bbe8 /ports/sysdeps/mips/sys/tas.h | |
parent | 75f0d3040a2c2de8842bfa7a09e11da1a73e17d0 (diff) | |
parent | e64ac02c24b43659048622714afdc92fedf561fa (diff) |
Merge glibc-ports into ports/ directory.glibc-2.16-ports-merge
Diffstat (limited to 'ports/sysdeps/mips/sys/tas.h')
-rw-r--r-- | ports/sysdeps/mips/sys/tas.h | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/ports/sysdeps/mips/sys/tas.h b/ports/sysdeps/mips/sys/tas.h new file mode 100644 index 0000000000..4585ac7f23 --- /dev/null +++ b/ports/sysdeps/mips/sys/tas.h @@ -0,0 +1,69 @@ +/* Copyright (C) 2000, 2002, 2003, 2004, 2007, 2009 + Free Software Foundation, Inc. + This file is part of the GNU C Library. + Contributed by Maciej W. Rozycki <macro@ds2.pg.gda.pl>, 2000. + + The GNU C Library is free software; you can redistribute it and/or + modify it under the terms of the GNU Lesser General Public + License as published by the Free Software Foundation; either + version 2.1 of the License, or (at your option) any later version. + + The GNU C Library is distributed in the hope that it will be useful, + but WITHOUT ANY WARRANTY; without even the implied warranty of + MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + Lesser General Public License for more details. + + You should have received a copy of the GNU Lesser General Public + License along with the GNU C Library. If not, see + <http://www.gnu.org/licenses/>. */ + +#ifndef _SYS_TAS_H +#define _SYS_TAS_H 1 + +#include <features.h> +#include <sgidefs.h> + +__BEGIN_DECLS + +extern int _test_and_set (int *__p, int __v) __THROW; + +#ifdef __USE_EXTERN_INLINES + +# ifndef _EXTERN_INLINE +# define _EXTERN_INLINE __extern_inline +# endif + +_EXTERN_INLINE int +__NTH (_test_and_set (int *__p, int __v)) +{ + int __r, __t; + + __asm__ __volatile__ + ("/* Inline test and set */\n" + ".set push\n\t" +#if _MIPS_SIM == _ABIO32 + ".set mips2\n\t" +#endif + "sync\n\t" + "1:\n\t" + "ll %0,%3\n\t" + "move %1,%4\n\t" + "beq %0,%4,2f\n\t" + "sc %1,%2\n\t" + "beqz %1,1b\n" + "sync\n\t" + ".set pop\n\t" + "2:\n\t" + "/* End test and set */" + : "=&r" (__r), "=&r" (__t), "=m" (*__p) + : "m" (*__p), "r" (__v) + : "memory"); + + return __r; +} + +#endif /* __USE_EXTERN_INLINES */ + +__END_DECLS + +#endif /* sys/tas.h */ |